5621247 has 24 divisors (see below), whose sum is σ = 8438976. Its totient is φ = 3603456.

The previous prime is 5621243. The next prime is 5621249. The reversal of 5621247 is 7421265.

It is not a de Polignac number, because 5621247 - 2² = 5621243 is a prime.

5621247 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5621247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40963 + ... + 41099.

It is an arithmetic number, because the mean of its divisors is an integer number (351624).

Almost surely, 2^5621247 is an apocalyptic number.

5621247 is a deficient number, since it is larger than the sum of its proper divisors (2817729).

5621247 is a wasteful number, since it uses less digits than its factorization.

5621247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 284 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 5621247 is about 2370.9169112392. The cubic root of 5621247 is about 177.8051037712.

The spelling of 5621247 in words is "five million, six hundred twenty-one thousand, two hundred forty-seven".